in the weekend可以用in weekend吗?

应该用on the weekend 还是 in the weekend? in the weekend on the weekend over the weekend un 我们说 on weekend ,at weekend,还是in the weekend 什么时候用in the weekend什么时候用on the weekend什么时候用at the weekend? () the weekend in or on? over the weekend和in the weekend的区别 是 in the weekend 还是 on thr weekend 请问在周末用on weekend 还是 in weekend 是at the weekend 还是用in?还是其他的~ who ___ in the classroom last weekend? What do you do in the weekend? on the weekend的weekend可以写成复数形式吗